Finding the Third Proportional to 665,784 and 1,456,155

Step by Step Solution

1. Step 1: Write the proportion equation
   665,784 : 1,456,155 = 1,456,155 : x
2. Step 2: Convert to fraction form
   665,784/1,456,155 = 1,456,155/x
3. Step 3: Cross multiply
   665,784x = 1,456,155 × 1,456,155
4. Step 4: Simplify right side
   665,784x = 2,120,387,384,025
5. Step 5: Solve for x
   x = 2,120,387,384,025/665,784
6. Step 6: Final answer
   x = 3,184,797.75